I don't understand the names "Cable Dec Panel" and "Cable Dec Row", but I have looked at the pattern and done quite a bit of thinking and figuring and this what I see happening.
On the first row that you decrease you do a SSK at the beginning of each of the St st panels and a K2tog at the end of each of the St stitch panels. When you work the cable panels you follow the chart that shows you how to decrease the cable panel parts. So on the first decrease row you p1, k3, s2kp, k3, p1 over each of the 3 cable panels.
Row 2: Purl across the St st panels and work the cable panels as k1, p2, sl1 pw wyif, k1, sl1 pw wyif, p2, k1.
Row 3: K across the st st panels with no decreases, and work each cable section p1, sl2 to CN, hold in back, k1, k2 from CN, p1, sl1 to CN, hold in front, k2, k1 from CN, p1.
Row 4: Purl across the St st panels. Work the cable panels: k1, p3, k1, p3, k1.
Row 5: (Dec row) Work a ssk at the beginning of each St st panel and a k2tog at the end of each St st panel. Work the cable panels: p1, k2, s2kp, k2, p1.
Row 6: Purl the St st panels and work the cable panels: k1, p1, sl1 st pw wyif, p1, sl1 st pw wyif, p1, k1.
Row 7: Knit across the St st panels, and work the cable panels as follows: P1, sl1 st to CN, hold in back, k1, k1 from CN, k1, sl1 st to CN, hold in front, k1, k1 from CN, p1.
Row 8: Purl across the St st panels, and work the cable panels as follows: k1, p5, k1.
Row 9: (Dec row) Ssk at the beginning of each St st panel and k2tog at the end of each St st panel. Work the cable panels:
P1, k1, s2kp, k1, p1.
Row 10: Purl the St st panels, work the cable panels k1, p3, k1.
Row 11: (Dec row) Begin each St st panel with a ssk and end it with a k2tog. Work the cable panels: P1, s2kp, p1.
Row 12: Purl the St st panels, work cable panels: k1, p1, k1.
Now you are done with the chart, and should have 25 sts. Work the next row by doing the ssk at the beginning of each St st panel and ending each St st panel with k2tog (they will be right next to each other by now) and working the cable panels: P1, k1, p1.
Work a row of purl.
On the last row k2tog across and end with a k1 because there was an uneven number.
Each of the decrease rows that are in the part where you work the decrease chart you will be decreasing 14 stitches. You do those 14 decreased stitches 4 times in the course of the chart. You started with 81. 14X4=56. So at the end of the chart you have 81-56=25 Then you do one more decrease row where you only decrease in the 4 St st sections. That makes 4X2=8 more that you decrease. 25-8=17. Then you k2tog 8 times +k1 to end up with 9 sts. End off.
I'm saving all this information for myself because my husband may want to knit this hat. He really likes it.
